3D Printing Info

Filament comparison

rPLA vs PMMA

Compare printing settings, strength, heat resistance, dated prices and sources.

Recycled PLA (rPLA) guidePMMA (acrylic) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore rPLA comparisonsMore PMMA comparisons
rPLA vs PMMA — documented properties and sources
PropertyRecycled PLA (rPLA)PLAPMMA (acrylic)ENGINEERING
Market snapshot
Listing priceUSD/kg; dated snapshots$20.79/kg median; $16.05–$40.64/kg across 8 dated product listings$49.99/kg median; $49.99–$49.99/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryPLA regranulated from post-industrial PLA manufacturing waste; post-consumer feedstock is rare[1][2][3]Poly(methyl methacrylate) — acrylic, sold for 3D printing as a transparent glass substitute[4]
Densityg/cm³1.24 (ISO 1183)[1]Not documented
Typical priceUSD/kg1 kg spools run 20–22[5][6][7]1 kg spools cluster near 50[8]
Price range across brandsUSD/kg16–41 across brands; Fiberlogy refill 16, Filamentive 750 g 41[9][10]50 at Push Plastic's 1 kg listing; 3 kg spools run the same per kilogram[8]
Market availability1–5Available from several mainstream brands[2][3][7]Special order, 1–2 makers worldwide[8]
Spool sizes & diameters1.75 and 2.85 mm; 0.75, 0.85 and 1 kg spools plus spool-less refills[11][9][2]1.75 and 2.85 mm; 1 and 3 kg spools[8]
Typical applicationsGeneral-purpose printing where the feedstock's recycled content matters more than an exact colour match[2][3]Transparent covers and light guides where PC's yellowing or cost rules it out[4]
Diameter tolerance± mm±0.03 guaranteed by Prusa Research today; the 2021 datasheet specified ±0.05, against ±0.02 for virgin Prusament PLA[2][1][12]Not documented
Printing Parameters
Nozzle temperature°C210 ± 10 (Prusament); 200 ± 15 (Filamentive)[1][3]Not documented
Bed temperature°C40–60 (Prusament); up to 60 (Filamentive)[1][3]Not documented
Enclosure / chamber requirement1–5Open frame is fine[1][13]Not documented
Part cooling fan100 %[1]Not documented
Warping tendency1–5None — brim not generally needed[1]Not documented
Bed-adhesion difficulty1–5Sticks to anything[14]Not documented
Overall printing difficulty1–5Beginner — prints on any machine out of the box[1][13]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[13]Not documented
Abrasiveness1–5Non-abrasive[15][13]Not documented
Nozzle clog risk1–5Very low[13]Not documented
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed; PLA softens below 60 °C[16]Not documented
Hotend requirementNo special hot-end required[14]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.3 % after both 24 h and 7 days at 28 °C / 37 % RH (Prusa Polymers method), against 0.19 % in 7 days for virgin Prusament PLA[1][12]Not documented
Equilibrium moisture content at ~50 % RH%0.3 after 24 h and 7 days at 28 °C / 37 % RH (Prusa Polymers method)[1]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[17]Not documented
Effect of moisture on strengthPolymaker rates PLA low-sensitivity — the loss shows as poor layer adhesion and brittle layers rather than a published strength figure[17]Not documented
Storage requirementSealed with desiccant below 20 % RH; shelf life at ambient is long[18][14]Not documented
Mechanical Properties
Tensile strength (XY)MPa49 printed horizontal and 55 printed vertical XZ (ISO 527-1, yield); virgin Prusament PLA gives 51 and 59 by the same method[1][12]Not documented
Young's modulusMPa2100 printed horizontal, 2300 printed vertical XZ (ISO 527-1); virgin Prusament PLA 2300 and 2400[1][12]Not documented
Elongation at break%3.1 at yield printed horizontal (ISO 527-1); virgin Prusament PLA 2.9[1][12]Not documented
Flexural strengthMPa82 printed horizontal, 87 printed vertical XZ (ISO 178); virgin Prusament PLA 83 and 99[1][12]Not documented
Flexural modulusMPa3100 printed horizontal (ISO 178) — the same as virgin Prusament PLA[1][12]Not documented
Other impact dataCharpy unnotched 14.0 printed horizontal (ISO 179-1); virgin Prusament PLA 13[1][12]Not documented
Layer adhesion / Z tensileMPa21 ± 2 (Prusa Polymers interlayer adhesion test); virgin Prusament PLA 17 ± 3 by the same test[1][12]Not documented
Brittleness1–5Brittle — snaps with little warning[16][15]Not documented
Hardness (scale-specific)Shore A / Shore D / Rockwell80 Shore D (Prusa Polymers in-house method); virgin Prusament PLA 81[1][12]Not documented
Creep resistance / sustained load1–5Poor — no recycled-PLA creep data published; virgin PLA sagged from 12 to 18.7–20.3 mm over 5 days at 1.25 kg[19][20]Not documented
Fatigue / repeated-flex resistance1–5Poor — no grade-specific S-N curve; plain printed PLA ran 38 000–49 000 cycles at 30 % of tensile strength (R = 0.2)[21][16]Not documented
Elasticity / flexibility1–5Rigid[15]Not documented
Thermal Properties
HDT at 0.45 MPa°C55 (ISO 75, 0.45 MPa) — the same as virgin Prusament PLA[1][12]Not documented
HDT at 1.8 MPa°C53 (ISO 75, 1.8 MPa); virgin Prusament PLA 55[1][12]Not documented
Continuous service temperature°C55 (Filamentive states heat resistance up to 55 °C)[3]Not documented
Thermal expansion (CTE)µm/m·K96–99 for plain printed PLA (fibre Bragg grating, 25–50 °C); no grade-specific measurement published[22]Not documented
Flammability / UL 94Flammable; no UL 94 rating published by the major brands[18][23]Not documented
Environment & Chemical
UV resistance1–5Degrades within weeks outdoors[16][24]Not documented
Chemical resistanceGood against weak acids, oils and grease; poor against strong acids and alkalis; dissolved by chloroform, THF and hot benzene[23][16]Not documented
Water / humidity resistance in service1–5Good — insoluble in water[18]Not documented
Food contactFilamentive certifies its rPLA to EN 71-3 and lists it food safe; printed layer grooves still harbour bacteria[3][16]Not documented
Biodegradability / compostabilityIndustrially compostable only — needs sustained 55 °C; not home compostable[3]Not documented
RecyclabilityThe feedstock itself; Filamentive uses 50 % post-industrial content and runs a PLA take-back scheme[3][10]Not documented
Health & Safety
Fume toxicity1–5Low hazard — minimal VOC and particle emission[25]Not documented
Hazardous species emittedPrusament rPLA Corn Pigment uses organic waste pigments such as red algae, which give a noticeable scent while printing[2]Not documented
Ventilation / filtration requirement1–5None needed in a normal room[25]Not documented
Post-Processing
Sanding & machiningWet sanding — dry sanding heats the surface by friction and smears it[24][16]Not documented
Gluing & solvent weldingSuperglue for most joints; acetone works on some grades depending on additives and colour[2]Not documented
Vapour / chemical smoothingNo practical vapour smoothing — only chloroform, hot benzene or THF, which are laboratory-only[16]Not documented
Solvents & Solubility
Soluble inChloroform: 10 % w/v in 2–4 h at 23 °C, every grade and morphology; THF and DMF only at 65 °C. Laboratory reagents.[26]Acetone, MEK, ethyl and butyl acetate, THF, chloroform and carbon tetrachloride dissolve it; the last two are laboratory reagents.[27]
Softened or crazed byAcetone, ethyl acetate and toluene plasticise it but dissolve <1 % even at 65 °C; submersion in acetone crazes and destroys parts.[26][28]Alcohols, aliphatic hydrocarbons, oils and phthalate plasticisers craze it, and the threshold falls as stress rises.[27]
Solvent welding & smoothing agentChloroform vapour smooths and welds PLA at the cost of tensile strength; acetone does not smooth it at all.[29][28]Dichloromethane acrylic cement (IPS Weld-On 3): 2–5 min soak, 17.2 MPa lap shear at one week. Controlled carcinogen.[30]

Material entries describe families or representative grades, not an interchangeable specification for every spool. Test methods, orientations and conditions may differ. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. Prusament PLA Recycled Technical Datasheet v1.0 Prusa Polymers · 2021-12 · tds
  2. Prusament rPLA Corn Pigment 1kg — product page Prusa Research · 2026-08 · vendor
  3. Filamentive PLA (recycled) — product page Filamentive · 2026-08 · vendor
  4. PMMA Filament 1.75mm 1kg — product page Push Plastic · 2026-08 · vendor
  5. 3D-Fuel ReFuel Recycled PLA 1kg 3D-Fuel · 2026-08 · vendor
  6. Proto-pasta Black Recycled PLA 1kg Proto-pasta · 2026-08 · vendor
  7. Formfutura ReForm rPLA (White) 1kg Filament2Print · 2026-08 · vendor
  8. Push Plastic product catalogue Push Plastic · 2026-08 · vendor
  9. Fiberlogy rPLA Refill Anthracite 850 g 3DJake International · 2026-08 · vendor
  10. Filamentive PLA (rPLA) 750 g CREATE Education · 2026-08 · vendor
  11. Kimya PLA-R 750 g Crea3D · 2026-08 · vendor
  12. Prusament PLA Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  13. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  14. PLA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  15. Prusament PLA — material page Prusa Polymers · 2026-08 · doc
  16. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  17. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  18. Bambu Filament Technical Data Sheet V3.0 — PLA Basic Bambu Lab · 2026-08 · tds
  19. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  20. PolyTerra PLA vs PLA+ — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  21. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  22. Characterization of Thermal Expansion Coefficient of 3D Printing Polymeric Materials Using Fiber Bragg Grating Sensors Materials 17(18):4668 · 2024-09 · paper
  23. PolyLite PLA Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  24. Prusament PLA Technical Data Sheet v1.0 Prusa Polymers · 2018-09 · tds
  25. Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments (Azimi et al.) Environmental Science & Technology 50(3) 1260-1268 · 2016-01 · paper
  26. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  27. Chemical resistance of PMMA products Mitsubishi Chemical (Acrypet) · 2026-08 · tds
  28. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  29. Effect of vapour smoothing in trichloromethane on 3D printed PLA — surface, mechanical and chemical structure Pitale, Keche & Chopra, Engineering Research Express 6(4) 045579 · 2024-12 · paper
  30. Weld-On 3 Acrylic Plastic Cement — technical data sheet (shipped as dichloromethane) IPS Corporation · 2002-07 · tds